“Pregnenolone?”Here!
Hasn’t appeared in a scanned product yet.
As a supplement
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
A steroid molecule the body makes from cholesterol and uses as a starting material for other hormones, including progesterone, DHEA, and cortisol. As a supplement it is synthesized in a lab rather than extracted from a person.
Why it’s used
Taken by some for mood, memory, or general vitality, on the theory that supplying more of this upstream hormone precursor might support downstream hormone levels.
What the evidence says
Human research is small in scale and inconsistent. A few short trials have looked at pregnenolone in conditions like bipolar disorder or schizophrenia-related cognitive symptoms, with mixed results, and there is no NIH Office of Dietary Supplements fact sheet or broad consensus supporting a general wellness effect in healthy adults.
Where we looked
There was no paper to cite here, so this is the search instead — run it yourself and see what we saw.
- PubMed: 673 records · searched September 2026
"Pregnenolone"[Title/Abstract] AND (review[pt] OR "safety assessment"[Title/Abstract] OR "risk assessment"[Title/Abstract] OR toxicology[Title/Abstract] OR toxicity[Title/Abstract] OR characterization[Title/Abstract] OR characterisation[Title/Abstract]) - PubMed: 1 record · searched September 2026
"Pregnenolone"[Title/Abstract] AND ("dietary supplements"[MeSH] OR supplementation[Title/Abstract] OR supplement[Title/Abstract] OR supplements[Title/Abstract] OR "oral administration"[Title/Abstract]) AND (randomized controlled trial[pt] OR clinical trial[pt] OR meta-analysis[pt] OR systematic review[pt]) AND humans[MeSH] - PubMed: 5991 records · searched September 2026
"Pregnenolone"[Title/Abstract]
This says what this database holds under these terms. It is not a finding that no research exists.
Context
Where studied, doses and populations have varied widely (psychiatric research settings using measured clinical doses), which makes the findings hard to generalize to over-the-counter supplement use.
Rumors
Pregnenolone reduces anxiety and improves sleep.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- apexofmen.substack.com — we couldn’t open the site to see who runs it
Pregnenolone supplements restore youthful hormone levels that decline with age.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- Life Extension — a brand: sells its own vitamins and supplements
How we know who this is
- “Life Extension is a privately owned vitamin and supplement company.” (their page)
- Life Extension — a brand: sells its own vitamins and supplements
Pregnenolone supplements improve memory and mental focus.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- Life Extension — a brand: sells its own vitamins and supplements
How we know who this is
- “Life Extension is a privately owned vitamin and supplement company.” (their page)
- Life Extension — a brand: sells its own vitamins and supplements
Pregnenolone causes acne, hair loss, facial hair growth in women, and irritability.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- Source Naturals — a brand: makes and sells its own wellness formulas
How we know who this is
- “For over 40 years, Source Naturals ® has been at the forefront of wellness innovation, creating breakthrough formulas that put your health in your hands.” (their page)
- Source Naturals — a brand: makes and sells its own wellness formulas
Taking pregnenolone can make adrenal fatigue worse.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- Flourish Clinic — a professional body or practice: clinic selling CIRS, fibromyalgia and chronic fatigue treatment
How we know who this is
- “At Flourish Clinic, we specialize in treating Chronic Inflammatory Response Syndrome (CIRS), fibromyalgia, and chronic fatigue.” (their page)
- Flourish Clinic — a professional body or practice: clinic selling CIRS, fibromyalgia and chronic fatigue treatment